Experimental aircraft operating limitations say that the condition inspection needs to be in accordance with the scope and detail of AC 43 appendix D (condition inspections). So he is more or less bound to that for the inspection. However that part only mentions inspecting the condition of the belts, nothing about labels or markings etc.
Elsewhere in AC43 (specifically 43.13-1B 9-46 b) there is language requiring TSO'd belts and TSO identification markings on the belt. However condition inspections (and E-AB overall) are not bound to any part of AC43 except part D. So to be diplomatic perhaps your friend can suggest to the A&P that he may be confusing the parts of AC43-13 that are actually applicable to E-AB?
I'm no expert just another builder but this is how I read it. If I'm wrong someone please correct me!
close but some corrections.
1. condition inspections are to be done under scope of FAR43 appendix D. not AC43. two different things entirely.
§43.1 Applicability.
(a) Except as provided in paragraphs (b) and (d) of this section, this part prescribes rules governing the maintenance, preventive maintenance, rebuilding, and alteration of any—
(1) Aircraft having a U.S. airworthiness certificate;
(2) Foreign-registered civil aircraft used in common carriage or carriage of mail under the provisions of Part 121 or 135 of this chapter; and
(3) Airframe, aircraft engines, propellers, appliances, and component parts of such aircraft.
(b) This part does not apply to—
(1) Any aircraft for which the FAA has issued an experimental certificate, unless the FAA has previously issued a different kind of airworthiness certificate for that aircraft;
the only reason appendix D is applicable is because it is spelled out in your op limits.
2. seat belts are in AC43-13b change 1b in section 9-64 PAGE 9-36.
3. even though AC43-13 is acceptable data to the FAA no AC is regulatory.therefore, AC 43-13 cannot require anything even on a type certificated aircraft. where the requirement for a tso belt comes from the certification fars. most light aircraft were certified under car3.
CAR3.715
Safety belts. Safety belts shall be of a type certificated in accordance with Part 15 of this chapter
having a TSO is how that met.
aircraft certified under part 23 have wording in the fars also that support it.
your points were on, but your references were not quite right.
bob burns
RV-4 N82RB